How do I verify product type compliance for my formula?

Use the INCI Checker on CosIng Checker to scan your ingredient list against all Annex II–VI entries. For each flagged ingredient, open its record to review the product type conditions, maximum concentration and any applicable warnings.

Product type 1 record

Hair straighteners containing two components: calcium hydroxide and a guanidine salt

Q: Are product type conditions for Hair straighteners containing two components: calcium hydroxide and a guanidine salt legally binding?

Yes. Product type conditions in Annex III are legally binding under EU Cosmetics Regulation 1223/2009. A product that does not comply with product type conditions for a restricted ingredient is non-compliant, regardless of whether concentration limits are met.

1 EU annex record carries product type conditions for Hair straighteners containing two components: calcium hydroxide and a guanidine salt cosmetics under Regulation 1223/2009. Conditions may include concentration limits, warnings and usage restrictions.

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Records mentioning Hair straighteners containing two components: calcium hydroxide and a guanidine salt

1 total

Annex

III

Entry

15c

CALCIUM HYDROXIDE

Calcium hydroxide

(a) Contains alkali Avoid contact with eyes Keep out of reach of children Can cause blindness (b) Contains alkali Keep out of reach of children Avoid contact with eyes

CAS

1305-62-0

215-137-3

Max concentration

How Hair straighteners containing two components: calcium hydroxide and a guanidine salt conditions affect compliance

There is 1 EU annex record on this page that mentions the Hair straighteners containing two components: calcium hydroxide and a guanidine salt product type category. Product type wording is where the regulation tells you whether a substance may, may not, or may only conditionally be used in that cosmetic category.

Reviewing records by product type is useful when your finished product clearly falls into the Hair straighteners containing two components: calcium hydroxide and a guanidine salt category and you need to check whether maximum concentrations, warnings or annex placement change for that use case.

Frequently asked questions

For substances listed in Annex III of EU Cosmetics Regulation 1223/2009, the product type field specifies which cosmetic categories the substance is permitted or restricted in. A substance with a restriction tied to Hair straighteners containing two components: calcium hydroxide and a guanidine salt products may be permitted at a different concentration, or prohibited altogether, in other product categories. Each entry should be read individually.

Yes. Product type conditions set out in Annex III are legally binding under EU Cosmetics Regulation 1223/2009. A cosmetic product that does not comply with the product type conditions for a restricted ingredient is not compliant, regardless of whether other conditions (such as concentration limits) are met.

Use the INCI Checker tool to scan your ingredient list against all Annex II–VI entries. For each flagged ingredient, open its individual record to review the product type conditions, maximum concentration and any applicable warnings to confirm they are compatible with your intended product category.

Open INCI Checker

A prohibited substance (Annex II) may not be present in any cosmetic product at any concentration. A restricted substance (Annex III) may be used but only under specific conditions — such as product type limitations, maximum concentrations and mandatory warnings. Both types of records appear in the list above if they carry a product type field.

Tools & next steps

Check your formula

Scan a full INCI list, then check whether flagged substances carry conditions for Hair straighteners containing two components: calcium hydroxide and a guanidine salt products.

INCI Checker

All product types

Browse all cosmetic product-type categories and compare how Hair straighteners containing two components: calcium hydroxide and a guanidine salt sits against neighbouring use cases.

View all product types

Browse Annex III

View all restricted substances in Annex III, including their product type conditions.

Open Annex III